A cantilever bridge is a bridge built using structures that project horizontally into space, supported on only one end. For small footbridges, the cantilevers may be simple beams; however, large cantilever bridges designed to handle road or rail traffic use trusses built from structural steel, or box girders built from prestressed concrete.
The Astoria–Megler Bridge is a steel cantilever through truss bridge in the Pacific Northwest region of the United States that spans the lower Columbia River. It carries a section of U.S. Route 101 from Astoria, Oregon, to Point Ellice near Megler, Washington. Opened in 1966, it is the longest continuous truss bridge in North America.
The Niagara Cantilever Bridge or Michigan Central Railway Cantilever Bridge was a cantilever bridge across the Niagara Gorge. An international railway-only bridge between Canada and the United States, it connected Niagara Falls, New York, and Niagara Falls, Ontario, located just south of the Whirlpool Bridge, and opened to traffic in 1883, it was replaced by the Michigan Central Railway Steel Arch Bridge in 1925.
The Columbia–Wrightsville Bridge, officially the Veterans Memorial Bridge, spans the Susquehanna River between Columbia and Wrightsville, Pennsylvania, and carries Pennsylvania Route 462 and BicyclePA Route S. Built originally as the Lancaster-York Intercounty Bridge, construction began in 1929, and the bridge opened September 30, 1930. On November 11, 1980, it was officially dedicated as Veterans Memorial Bridge, though it is still referenced locally as the Columbia–Wrightsville Bridge.
State Route 25 (SR 25), named the Coulee Reservoir Highway, is a 121.17-mile-long (195.00 km) state highway serving communities in Lincoln and Stevens counties in the U.S. state of Washington. The highway begins at an intersection with U.S. Route 2 (US 2) east of Davenport and continues northwest to cross the Spokane River. From there, SR 25 parallels the Columbia River and Franklin D. Roosevelt Lake upstream through several small communities, passing the Gifford–Inchelium Ferry, to Kettle Falls. In Kettle Falls, the roadway intersects US 395, co-signed with SR 20 and continues north to Northport, where former SR 251 is intersected and SR 25 crosses the Columbia River on the Northport Bridge. The highway travels northwest to the Canadian border, where it becomes British Columbia Highway 22 (BC 22).
The Mount Orne Bridge is a covered bridge over the Connecticut River between Lancaster, New Hampshire, and Lunenburg, Vermont. It joins Elm Street in South Lancaster with River Road in Lunenburg. Built in 1911, it is one of two Howe truss bridges across the Connecticut River. It was listed on the National Register of Historic Places in 1976.
U.S. Route 395 (US 395) is a United States Numbered Highway that runs from California to the inland regions of Oregon and Washington. It travels north–south through Washington, including long concurrencies with Interstate 82 (I-82) and I-90, and connects the Tri-Cities region to Spokane and the Canadian border at Laurier.
The Grand Coulee Bridge, or Columbia River Bridge at Grand Coulee Dam, is a through-cantilever steel truss bridge built in 1934–35. It carries State Route 155 across the Columbia River immediately below Grand Coulee Dam, near the city of Grand Coulee, Washington. It was added to the National Register of Historic Places in 1982.
The Senator George Sellar Bridge at Wenatchee, Washington was built in 1950 as the "Columbia River Bridge" to carry U.S. Route 2 across the Columbia River.
The Northport Bridge spans the Columbia River near Northport, Washington, close to the border with Canada. The steel cantilever through-truss bridge replaced an 1897 timber bridge, and was opened in 1951. It carries Washington State Route 25. It is one of a series of similar bridges built at about the same time, including the Grand Coulee Bridge and the Kettle Falls Bridges.
The AJX Bridge is a historic Pratt truss bridge in southwestern Johnson County, Wyoming. The bridge was built in 1931 across the South Fork of the Powder River near Kaycee, Wyoming. AJX Bridge was built to provide a river crossing for U.S. Route 87. It was placed on the National Register of Historic Places in 1985 as part of a Multiple Property Submission devoted to historic bridges in Wyoming.
Hardy Bridge is a Warren through truss, three-span, two-lane bridge in the western United States. It crosses the Missouri River and is located at milepost 6 on Old U.S. Route 91, about fourteen miles (23 km) southwest of Cascade, Montana, which is southwest of Great Falls.
The Newport Bridge is a historic cantilevered Warren truss bridge over the White River in Newport, Arkansas. Built in 1930 to carry U.S. Route 67 (US 67), the road it carries is now designated Arkansas Highway 367 (AR 367) after the former highway was relocated. The main bridge is 400 feet (120 m) long, with approaches from the west of 1,278 feet (390 m) and the south of 911 feet (278 m). It has cantilevered arms 138 feet (42 m) long supported by concrete piers, with a suspended Warren truss span of 125 feet (38 m). Designed by Ira G. Hedrick, it is one of three such bridges in the state.
The Quechee Gorge Bridge is a historic bridge, carrying U.S. Route 4 (US 4) across Quechee Gorge, near the Quechee village of Hartford, Vermont. Built in 1911, it is Vermont's oldest surviving steel arch bridge. It was listed on the National Register of Historic Places in 1990.
The Middlesex–Winooski River Bridge is a steel girder bridge carrying U.S. Route 2 (US 2) across the Winooski River in a rural area on the town line between Moretown and Middlesex, Vermont. The two-span bridge was built in 2010, replacing a 1928 three-span Pratt through truss, which was listed on the National Register of Historic Places in 1991.
The Mississquoi River Bridge is a steel truss bridge, spanning the Missisquoi River between Richford, Vermont and Sutton, Quebec on the Canada–United States border. It connects Chemin de la Vallée Missisquoi in Sutton with Vermont Route 105A in Richford, between the border stations of the East Richford–Glen Sutton Border Crossing. The bridge was built by the state of Vermont in 1929, and is one of two in the state built by the Pittsburgh-Des Moines Steel Company. It was listed on the United States National Register of Historic Places in 1990.
The Hassayampa Bridge is a bridge spanning the Hassayampa River in Hassayampa, Arizona, located in Maricopa County. The bridge was completed in 1929 and was listed on the National Register of Historic Places in 1988. The bridge was scheduled for demolition in 1983.
The West Broadway Bridge, aka West Street Bridge and the Concrete-Metal Bridge, is a vehicular bridge over the Passaic River in Paterson, New Jersey. It carries West Broadway, traditionally the Paterson-Hamburg Turnpike, and connects to County Route 509 at its west end.
The Grande Ronde River Bridge, near Asotin in Asotin County in southeast Washington, is a riveted steel girder bridge which was built in 1941. It is notable as the first, or one of the first, steel girder bridges in the Washington State highway system, and was a prototype for later ones. It was listed on the National Register of Historic Places in 1995.
The Gillespie Dam Bridge is a through truss bridge spanning the Gila River in Maricopa County, in the U.S. state of Arizona. The bridge was constructed to bypass a concrete apron through the river in front of the Gillespie Dam, which was often closed due to flooding. Construction of the bridge started in 1925 and completed in 1927. From its opening until 1956, the bridge was part of U.S. Route 80 (US 80), a transcontinental highway between San Diego, California and Tybee Island, Georgia. The bridge was restored in 2012 by Maricopa County for the Arizona Centennial and now includes an educational interpretive center for visitors. The bridge became part of Historic US 80 in 2018.
US 395 / SR 20 (south bridge)
